Abstract
This paper investigates the effect of modal interference on the performance of hollow-core photonic bandgap fiber (HC-PBF) gas sensors. By optimizing mode launch, using proper length of sensing HC-PBF, and applying proper wavelength modulation in combination with lock-in detection, as well as appropriate digital signal processing, an estimated lower detection limit of less than 1 part-per-million by volume (ppmv) acetylene is achieved.
Original language | English |
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Pages (from-to) | 24894-24907 |
Number of pages | 14 |
Journal | Optics Express |
Volume | 22 |
Issue number | 20 |
DOIs | |
Publication status | Published - 1 Jan 2014 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics